diff --git a/gedit_plugin/meson.build b/gedit_plugin/meson.build
index fec30b5..4027a4b 100644
--- a/gedit_plugin/meson.build
+++ b/gedit_plugin/meson.build
@@ -5,7 +5,7 @@ ATHOME = (get_option('ATHOME') != '')
 add_global_arguments('-DGETTEXT_PACKAGE="autovala_gedit"',language: 'c')
 
 find_program ('g-ir-compiler')
-gtksourceview_3_0_dep = dependency('gtksourceview-3.0')
+gtksourceview_4_dep = dependency('gtksourceview-4')
 AutoVala_dep = dependency('AutoVala')
 AutovalaPlugin_dep = dependency('AutovalaPlugin')
 atk_dep = dependency('atk')
diff --git a/gedit_plugin/src/meson.build b/gedit_plugin/src/meson.build
index 3976c52..9878629 100644
--- a/gedit_plugin/src/meson.build
+++ b/gedit_plugin/src/meson.build
@@ -12,7 +12,7 @@ cfgfile_1 = configure_file(
 	output: 'Config.vala',
 	configuration: cfg_gedit_plugin)
 
-gedit_plugin_deps = [gtksourceview_3_0_dep]
+gedit_plugin_deps = [gtksourceview_4_dep]
 gedit_plugin_deps += [AutoVala_dep]
 gedit_plugin_deps += [AutovalaPlugin_dep]
 gedit_plugin_deps += [atk_dep]
diff --git a/src/autovalaLib/configuration.vala b/src/autovalaLib/configuration.vala
index f577241..aec5495 100644
--- a/src/autovalaLib/configuration.vala
+++ b/src/autovalaLib/configuration.vala
@@ -398,7 +398,7 @@ namespace AutoVala {
 		}
 
 		private bool check_version(string version) {
-			return Regex.match_simple("^[0-9]+.[0-9]+(.[0-9]+)?$", version);
+			return GLib.Regex.match_simple("^[0-9]+.[0-9]+(.[0-9]+)?$", version);
 		}
 
 		/**
diff --git a/src/autovalaLib/elementValaBinary.vala b/src/autovalaLib/elementValaBinary.vala
index 97250fe..8d85d11 100644
--- a/src/autovalaLib/elementValaBinary.vala
+++ b/src/autovalaLib/elementValaBinary.vala
@@ -314,7 +314,7 @@ namespace AutoVala {
 				this.regexClasses   = new GLib.Regex("^[ \t]*(public )?(private )?[ \t]*class[ ]+");
 				this.regexDefines   = new GLib.Regex("^VALA_[0-9]+_[0-9]+$");
 			} catch (GLib.Error e) {
-				ElementBase.globalData.addError(_("Can't generate the Regexps"));
+				ElementBase.globalData.addError(_("Can't generate the GLib.Regexps"));
 			}
 		}
 
@@ -822,7 +822,7 @@ namespace AutoVala {
 		}
 
 		private bool checkVersion(string version) {
-			return Regex.match_simple("^[0-9]+.[0-9]+(.[0-9]+)?$", version);
+			return GLib.Regex.match_simple("^[0-9]+.[0-9]+(.[0-9]+)?$", version);
 		}
 
 		private bool setVersion(string version, bool automatic, int lineNumber) {
diff --git a/src/autovalaLib/genVapis.vala b/src/autovalaLib/genVapis.vala
index 7f941ea..56b161c 100644
--- a/src/autovalaLib/genVapis.vala
+++ b/src/autovalaLib/genVapis.vala
@@ -185,7 +185,7 @@ namespace AutoVala {
 			element.filenames.add(file);
 			newfile = file;
 			// if the filename has a version number, remove it
-			if (Regex.match_simple("-[0-9]+(.[0-9]+)?$", file)) {
+			if (GLib.Regex.match_simple("-[0-9]+(.[0-9]+)?$", file)) {
 				var pos = file.last_index_of("-");
 				newfile = file.substring(0, pos);
 				// if there is no version number inside, use the one in the filename